40x^2-25*x=-3

Simple and best practice solution for 40x^2-25*x=-3 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 40x^2-25*x=-3 equation:


Simplifying
40x2 + -25x = -3

Reorder the terms:
-25x + 40x2 = -3

Solving
-25x + 40x2 = -3

Solving for variable 'x'.

Reorder the terms:
3 + -25x + 40x2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + -25x + 40x2 = 0

Begin completing the square.  Divide all terms by
40 the coefficient of the squared term: 

Divide each side by '40'.
0.075 + -0.625x + x2 = 0

Move the constant term to the right:

Add '-0.075' to each side of the equation.
0.075 + -0.625x + -0.075 + x2 = 0 + -0.075

Reorder the terms:
0.075 + -0.075 + -0.625x + x2 = 0 + -0.075

Combine like terms: 0.075 + -0.075 = 0.000
0.000 + -0.625x + x2 = 0 + -0.075
-0.625x + x2 = 0 + -0.075

Combine like terms: 0 + -0.075 = -0.075
-0.625x + x2 = -0.075

The x term is -0.625x.  Take half its coefficient (-0.3125).
Square it (0.09765625) and add it to both sides.

Add '0.09765625' to each side of the equation.
-0.625x + 0.09765625 + x2 = -0.075 + 0.09765625

Reorder the terms:
0.09765625 + -0.625x + x2 = -0.075 + 0.09765625

Combine like terms: -0.075 + 0.09765625 = 0.02265625
0.09765625 + -0.625x + x2 = 0.02265625

Factor a perfect square on the left side:
(x + -0.3125)(x + -0.3125) = 0.02265625

Calculate the square root of the right side: 0.150519932

Break this problem into two subproblems by setting 
(x + -0.3125) equal to 0.150519932 and -0.150519932.

Subproblem 1

x + -0.3125 = 0.150519932 Simplifying x + -0.3125 = 0.150519932 Reorder the terms: -0.3125 + x = 0.150519932 Solving -0.3125 + x = 0.150519932 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = 0.150519932 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = 0.150519932 + 0.3125 x = 0.150519932 + 0.3125 Combine like terms: 0.150519932 + 0.3125 = 0.463019932 x = 0.463019932 Simplifying x = 0.463019932

Subproblem 2

x + -0.3125 = -0.150519932 Simplifying x + -0.3125 = -0.150519932 Reorder the terms: -0.3125 + x = -0.150519932 Solving -0.3125 + x = -0.150519932 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = -0.150519932 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = -0.150519932 + 0.3125 x = -0.150519932 + 0.3125 Combine like terms: -0.150519932 + 0.3125 = 0.161980068 x = 0.161980068 Simplifying x = 0.161980068

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.463019932, 0.161980068}

See similar equations:

| log(4x+3)=5 | | 5x-3g-22=0 | | (9-25x)-(9+25x)= | | 9X-8X-7=2X-25 | | 1=3r+8 | | 4r-2=2r | | -3/7*m=12 | | 3(2x-6)=17 | | 3/7*m=12 | | 1+(d^3+ad^2+bd+c)=ed | | -4(x-2y+4)= | | 2x^2-24x+3y^2=0 | | 1/10*4/5 | | -1=z/4 | | (x-2)+x=38 | | A+B*C= | | 5-3g-22=0 | | 3-7(a+4)=-37-3a | | 12/9=20/x | | 7y-11=x+3 | | F(-4)=46-2 | | 0.15=80 | | 7x+15=58-20 | | 30=1.25x | | 3(3+3X)=8(X-4) | | x*x+25= | | -7x-6=-5x-20 | | 20x+40=25x+10 | | 14x^2+65x+56=0 | | 0.4x-0.1(18-2x)=-0.6(x-5) | | 15=1/2h | | 4n^2-8n-2=10 |

Equations solver categories